Retort



f Patented Fea-3, 1931 WILLIAM F. RIEGER, or SALT LAKE CITY, UTAH, AssIGNoIcrY MEsNE ASSIGNMENTS, l

To TIIE sToKER MATIc CORPORATION, oF SALT' CITY, UTAH. A ,coRroItA'TIoN l or UTAH nEToItT j Application filed August'13, 1928. 4Seri-al'll'o'. 2995176. i'

My invention relates to retorts for stoker furnaces and has for its object to provide a new and efficient device which will not burn out under excessive heat and one vwhich will give greater combustion to the fuel.

A further object is to provide a light weight, compact retort which will be economical to manufacture, light to handle and easily installed.

These objects I accomplish with the device illustrated in the accompanying drawings in which similar numerals and let-tersof reference indicate like parts throughout the several views and as described in the Vspecification forming a part of this application and pointed out in the appended claims. In the drawings in which I have shown the best and most preferred manner of building my invention Figure 1 is a plan view of thev retort with the'outline of the brick furnace wall shown in dotted lines. Figure 2 is a vertical longitudinal section of the device. Figure 3 is -an enlarged sectional view 'showino an air passage and thewater chamber more clearly. Figure 4 is a section on line 4;-4 of Figure 1. Figure 5 is a horizontal sectional view through an air passage, showing more clearly the arrangement'of the deflector plate mounted therein.

In the drawings I have shown kdotted lines A to indicate the furnace, and with the pipes B and C to indicate the coal inlet and the air inlet pipes respectively. The retort is made by forming square side pieces' 1. and 2 and end pieces 3 and 4 together, with, the corners Vrounded forming a retort having the sides with lugs 8 formed on the corners through which the bolts G are passed to hold the water chamber D to the air chamber E.. The lower sideof the said air chamber is not closed but is set into concrete or brick when the retort is set in a furnace so that no air can escape through the retort'. i Thettopl side :the fireboX is open andis closed Varound the-edges by the water jacket and the central portion is closed by theV curved semicircular sheet of metal 9which is secured aroundkits edges to the inner lower side of the water jacket` and is attached-to the coal supplypipe B. `The coalsupplypipe B is provided with-.a'screw IOwhich is rotated tojdrive'the coaliuto the retort, by screw action and the sloping surface of the plate 9 introduces the coal upwardly around the.- inner face of the retort.

Anair inlet pipey Cris secured on the front face lof the said air chamber throughwhich airis forced to fill the chamber. Tuyre oponings 12 arefprovided` in thefront face 14 of inthe 4water chamber D with the flat diameter -semicylindrical pipesll which pipes are made n the pipes willbe forced inwardly through the j I tuyre openings`12. YThe bottom ends of the saidpipes-are welded to thebottom ofthe water chamber and the opening of the pipe is in open connection lwiththe air chamber E so that when air is forced in at the said chamber it will be forced outinto the retort vthrough the tuyre openingslQ by pressure in the said-pipes and air chamber. As shown in Figure 3, the tuyre openings may be made at different angles to the front face 14 so that `the air introduced therethrough will be vdirected` into the retort in the correct angle and air passing through the upper tuyre openings will be forced inwardly and downwardly while air passing through the lower openings will'be forced inwardly and upwardly. `The said pipes 11 are provided with deflecting `plates lwvhioh are formed therein to direct the air toward the tuyre openings as necessary. 'Y An inlet pipe 16 and van outlet pipe 1 7 are provided in the water chamber and they `are kconnected with the water jacketof the furnaceto lprovide free circulation of water through the water chamber at v al1 times.

The operation of my invention is as follows When the coal is introduced onto the pipe B by the screw 10 itis forced inwardly and upward-ly against the sides of the water chamber and air is at the same time being forced Y Y l l1,790,840

,through the` air chamber vE and the tuyre openings l2 into the retort and When the coal is ignited by any suitable means the force of air passing through the tuyre openings Will create combustion thereof to such an extent that rthere '-.tvillbe no :Smoke ifrom the tire; As new coal is introduced the old burning coal and ashes are forced-inwardly and upwardlyigivingway forthe-new c0111- bustion 4fuel and the promessds 4continued as desired. The air being so introduced creates such a complete combustion that there isfno loss of fuel by incomplete combustion and the direction of the tuyreopeningsfintroduces theincomingair into the necessary streams forV such 'completecombustion f lil-laying thus described `my 'inventionlfdesire to,=secure"by Letters Patent -andclaim 15in f-a furnace constructifom a I`retort,

means Ifor feeding fuel 'to said retort, and va Water jacket 1Vsur-rounding said retort, the

Walls of said Water `jacket and the Jretort defining air lpassages, each of said zpassages having Ia })l-ura'lityofopeningsinto the retort `so as'to feed airto asubstantial body of-the "fuel therein.

2. In a 'furnace construction, the 'combination of -a retort, ymeans vfor feeding jiuel -to said retort, an a1r:chamber at thebase ofsaid retort, Aanda -Water jacket surrounding the retort at the -ltopof said air chamber, I'the walls' of said `retort -and -waterjacket defini-ng plurality of 'vertically `arranged -air ,passages communicating at oneend- W-iththe air v chaniben'thewallotheretort being-provided -witha plurality of openings communicating with each jo'ztsaidfair passages andthe'wjater of; saidwa-terfj acket being adaptedto 'contact with ithe Walls yof :the air 'passages and the i Wal-lof the retort intermediate Ithe-same :so as to coola substantial area'ofboth'sai'd` air passages' and aretort.

v3.?In 4an underfed furnace,'the combination with a retort havin-g lupwardly extending. :Walls provided with `arplurality of groups of tuyre openings disposed substantially vin alignment, anenclosing' Wall -disposedatthe vrear'o'f eachgroup of tuyrefopeningstoform air supplying 'passa-ges land opening ldoWn- `wardly, and a Waterfjaclzet enelosingthewall of. SaidretOrt and the passages.

4. In 1a :furnace of thety'pe described, the combination ofaretort Vproizid-ed Withmeans ifor forcing `fuel through'the bottom, `aflosed .air chamber surrounding the retort and providedl With-a plurality of passages'exten'ding upwardly vtheref-rom'in contact'with the re- 'tortwall and ,communicating therewith, and common coollng means for saidretortand passages.

"In testimony whereof l have `aiixelimy signature.

'WLLIAM F. 'REGER 

